Sarah Koenig

Maybe he killed Hay.

But I did wonder if maybe he'd heard something about the crime and about where she was buried.

Because it did seem a tad unbelievable to me that he spotted her the way he said he did.

One theory I had was maybe one of his stepkids or a neighbor had told him about the body, because maybe they'd heard about it through other kids at school.

And maybe Mr. S., just as a good Samaritan, thought, someone needs to go find this girl and tell the cops.

But he doesn't want to say he's heard about it beforehand, because he doesn't want to get anyone else in trouble.

Mr. S. didn't want to talk to me.

After I made several requests, he asked if I'd please leave him alone.

Fair enough.

I tried every which way to figure out if he knew or anyone in his family knew Adnan or Jay or any of the people Jay had told about the murder.

And vice versa, whether any of them had ever heard of Mr. S. I found no connections.

The closest I got was, bear with me, I found out that Mr.

S.

's sister-in-law was a math teacher at Woodlawn back in 1999 when all this happened.

So I called her.

Hay was her student, she said.

An excellent student.

Top of the line.

But she didn't think Mr. S knew anything about the crime before he found the body.

She put her husband on the phone, Mr. S's younger half-brother.